.form-content{
    width: 500px;
    margin: 0 auto;
}
.register-title{
    text-align: center;
    background-color: #f5f5f5;
    height: 40px;
    line-height: 40px;
}
.code-input{
    width: 240px;
    display: inline-block;
}
.code-btn{
    width: 90px;
}